SLVUDB5A June   2025  – November 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 General Configurations
      1. 2.1.1 Physical Access
      2. 2.1.2 Test Equipment and Setup
  8. 3Implementation Results
    1. 3.1 Test Setup and Procedures
      1. 3.1.1 Supply Ramped From 0V to 54V — Start-up
      2. 3.1.2 Power Up Into Short
      3. 3.1.3 Undervoltage Lockout
      4. 3.1.4 Overvoltage Lockout
      5. 3.1.5 Overcurrent Event
      6. 3.1.6 Output Hot Short
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Drawings
    3. 4.3 Bill of Materials (BOM)
  10. 5Additional Information
    1. 5.1 Trademarks
  11. 6Revision History

3.1.1 Supply Ramped From 0V to 54V — Start-up

Comply with the following instructions to measure the inrush current during a hot plug event:

  1. Configure the jumper J4 position to the desired start-up slew rate as detailed in 7.
  2. Connect the positive terminal of the power supply to connector J13.
  3. Connect the negative terminal of the power supply to connector J11.
  4. Set the input supply voltage VIN to 54V and current limit to 10A. Enable the power supply.
  5. Observe the waveforms at VOUT2(TP38) and input current using an oscilloscope to measure the slew rate and rise time of the VOUT2 with a given input voltage of 54V.
TPS1686-87EVM TPS1686 eFuse Power-Up Profile
VIN step up from 0V to 54V and CDVDT = 47nF
Figure 3-2 TPS1686 eFuse Power-Up Profile